13. A company that manufactures MP3 players uses the relation AP= 120x60x² to model its profit. The variable x represents the number of thousands of MP3 players sold. The variable P represents the profit in thousands of dollars. a) What is the maximum profit the company can earn? b) How many MP3 players must be sold to earn this profit? c) The company "breaks even when the profit is zero. Are there any break-even points for this company? If so, how many MP3 players are sold at the break-even points?

Q: У -1 T10 X33 33

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